3M AS-400LBC and AS-600LBC Manuel D’Utilisation

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The 3M™ Airstream™ Headgear-Mounted Powered Air Purifying 
Respirator (PAPR) System is a NIOSH-approved, loose fitting facepiece 
system. The blower and filter are mounted inside the headgear shell 
and powered by a rechargeable NiCd battery pack, which clips to the 
user’s belt. The 3M™ Airstream™ Headgear-Mounted PAPR System 
is designed to help provide respiratory protection against particulates 
when using the AS-140-5 high efficiency filter or from hydrogen 
fluoride when using the AS-176 cartridge. 

Ambient air is drawn through the outer pre-filter and passes up 
through the top of the headgear, where it passes through the 
filter/cartridge “sock”. The filtered air then flows down over the user’s 
face and exits at the periphery of the faceseal (Fig. 1). A head seal, faceseal, and temple seals plus 
positive air flow help prevent mixing of filtered air inside the visor with ambient air

.

 When not in the 

contaminated area, the visor assembly can be lifted and locked in the up position. This respirator 
headpiece will accommodate limited facial hair without compromising the level of protection, provided 
there is no facial hair between the elasticized edge of the faceseal and the face. 

This product helps protect against certain airborne contaminants. 
Misuse may result in sickness or death. For proper use, see 
supervisor, User Instructions, or call 3M in U.S.A., 1-800-243-4630. In 
Canada, call Technical Service at 1-800-267-4414.

Respiratory protection against certain airborne particulate contaminants (including dusts, fumes, mists, 
radionuclides and asbestos) or hydrogen fluoride.

- Oxygen deficient atmospheres.
- Gases and vapors other than hydrogen fluoride.
- Contaminant concentrations that are unknown or immediately dangerous to life or health (IDLH).
- Contaminant concentrations that exceed 25 times the applicable exposure limit (the assigned 

protection factor, APF, for this respirator system) or the APF mandated by specific government 
standards, whichever is lower.

- Atmospheres containing paint spray or oil aerosols. 

Use of these respirators must be in accordance with applicable health and safety standards, respirator 
selection tables contained in such publications as American National Standards Institute (ANSI) Z88.2-
1992, Canadian Standards Association (CSA) Standard Z94.4 or pursuant to the recommendations of 
an industrial hygienist. Before occupational use of these respirators, a written respiratory protection 
program must be implemented meeting all the requirements of OSHA 29 CFR 1910.134 such as 
training, fit testing, medical evaluation, and applicable OSHA substance specific standards. In Canada, 
CSA standards Z94.4 requirements must be met and/or requirements of the applicable jurisdiction, as 
appropriate.

If you have any doubts about the applicability of these respirators to your job situation, consult an 
industrial hygienist or call 3M OH&ESD technical service department at 1-800-243-4630. In Canada, 
call Technical Service at 1-800-267-4414.

Each person using this respirator must read and understand the information in these User 
Instructions before use. Use of these respirators by untrained or unqualified persons, or use that 
is not in accordance with these User Instructions,

•  This product helps protect against certain airborne contaminants.

sickness or death. For proper use, see supervisor, User Instructions, or call 3M in U.S.A., 
1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

•  Each person using this respirator must read and understand the information in these User 

Instructions before use. Use of these respirators by untrained or unqualified persons, or use that 
is not in accordance with these User Instructions, may adversely affect respirator performance 
and 

•  Because the faceshields of the 3M™ Airstream™ Headgear-Mounted PAPR System can be

raised from the normal position, ANSI Z87.1-2003/CSA Z94.3 states that safety spectacles 
or goggles must be worn in conjunction with this respirator. 

•  Do not use with parts or accessories other than those manufactured by 3M as described in

these User Instructions or on the NIOSH approval label for this respirator. Do not attempt to 
repair or modify any component of the system except as described in these User Instructions. 
Failure to do so may adversely affect respirator performance and result in sickness or 
death.

•  Use of excessive force during the insertion of the filter/cartridge may damage the filter/cartridge

and/or the filter/cartridge holder. Do not attempt to repair or use damaged filter/cartridges. If 
damage is suspected, remove and start over with new components as necessary. 

Fig. 1